The surface area of a sphere is 7.84π. What is the radius of this sphere?
The formula for the surface area of a sphere is 4πr², where r is the radius of the sphere.
In this case, we have 7.84π as the surface area.
So, we can set up the equation:
4πr² = 7.84π
Dividing both sides of the equation by 4π:
r² = 1.96
Taking the square root of both sides:
r = √1.96
Simplifying the square root:
r ≈ 1.4
Therefore, the radius of the sphere is approximately 1.4.